As a designer (both employed by an entertainment company and self-employed/freelance), I can tell you $90 is really inexpensive for a logo. When I quote out logos to potential clients, the minimum I would ever charge is around $200-250, and that's only when I know it will an easy job with few revisions. I know from talking with other designers in my area that even charging $200-250 for a logo is comparably inexpensive. I know others charge a minimum of $500, but I've found that $200-250 works for me so I've stuck with it.
Music washes from the soul the dust of everyday life.